---
name: "X509_SIG_get0"
section: "3ssl"
platform: "linux"
package: "openssl"
version: "3.6.5-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/X509_SIG_get0"
---

# X509\_SIG\_get0(3ssl)

DigestInfo functions

## NAME

X509\_SIG\_get0, X509\_SIG\_getm - DigestInfo functions

## SYNOPSIS

```
 #include <openssl/x509.h>
 void X509_SIG_get0(const X509_SIG *sig, const X509_ALGOR **palg,
                    const ASN1_OCTET_STRING **pdigest);
 void X509_SIG_getm(X509_SIG *sig, X509_ALGOR **palg,
                    ASN1_OCTET_STRING **pdigest);
```

## DESCRIPTION

**X509\_SIG\_get0()** returns pointers to the algorithm identifier and digest value in **sig**. **X509\_SIG\_getm()** is identical to **X509\_SIG\_get0()** except the pointers returned are not constant and can be modified: for example to initialise them.

## RETURN VALUES

**X509\_SIG\_get0()** and **X509\_SIG\_getm()** return no values.

## SEE ALSO

**d2i\_X509**(3)

## COPYRIGHT

Copyright 2002-2020 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the Apache License 2.0 (the "License").  You may not use this file except in compliance with the License.  You can obtain a copy in the file LICENSE in the source distribution or at \<https://www.openssl.org/source/license.html\>.